package com.sky.service.impl;

import com.baomidou.mybatisplus.core.metadata.OrderItem;
import com.baomidou.mybatisplus.extension.conditions.query.QueryChainWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl extends ServiceImpl<EmployeeMapper, Employee> implements EmployeeService {

//    @Autowired
//    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
//        Employee employee = employeeMapper.getByUsername(username);
        //根据名字查找用户
        Employee employee = query().eq("username", username).one();
        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
         password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

//    /**
//     * 新增员工功能
//     * @param employeeDTO
//     * @return
//     */
//    public void save(EmployeeDTO employeeDTO) {
//        System.out.println("当前线程的id：" + Thread.currentThread().getId());
//        Employee employee = new Employee();
//        //对象属性拷贝
//        BeanUtils.copyProperties(employeeDTO,employee);
//
//        employee.setStatus(StatusConstant.ENABLE);
//
//        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
//
////        employee.setCreateTime(LocalDateTime.now());
////        employee.setUpdateTime(LocalDateTime.now());
////
////        employee.setCreateUser(BaseContext.getCurrentId());
////        employee.setUpdateUser(BaseContext.getCurrentId());
//
//        save(employee);
////        employeeMapper.insert(employee);
//    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        String name = employeePageQueryDTO.getName();
        //分页条件
        Page<Employee> pageCondition = Page.of(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        //排序条件
        pageCondition.addOrder(new OrderItem("create_time",false));

        //分页查询
        Page<Employee> page = lambdaQuery()
                .eq(name != null, Employee::getName, name)
                .page(pageCondition);

        long total = page.getTotal();

        List<Employee> records = page.getRecords();


        return new PageResult(total, records);
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        // update employee set status = ? where id = ?
        lambdaUpdate().set(Employee::getStatus, status).eq(Employee::getId, id).update();
    }

}
